package cn.dxj1016.state;

import java.text.SimpleDateFormat;
import java.util.Date;

//模拟倒计时
public class TestSleep02 {

    public static void main(String[] args) {
//        打印当前系统时间
        Date date = new Date(System.currentTimeMillis());//获取系统当前时间
        while (true) {
            try {
                Thread.sleep(1000);
                System.out.println(new SimpleDateFormat("HH:mm:ss").format(date));
                date = new Date(System.currentTimeMillis());//更新当前时间
            } catch (InterruptedException e) {
                e.printStackTrace();
            }

        }

    }

//模拟倒计时
    public static void tenDown() {
        int num = 10;
        while (true) {
            try {
                Thread.sleep(1000);
                System.out.println(num--);
                if (num <= 0) {
                    break;
                }
            } catch (InterruptedException e) {
                e.printStackTrace();
            }

        }
    }
}
